Question

on: oil is used between two facing surfaces, such as pistons and cylinders, to overcome ______. answer input: spelling counts but capitalization doesn’t.

Explanation:

Oil is used as a lubricant between two facing surfaces (like pistons and cylinders) to reduce friction. Friction is the force that opposes motion between two surfaces in contact, and lubricants like oil help overcome this resistance by creating a smooth layer between the surfaces.

Answer:

friction